Paper number 359
|MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AL MATRIX COMPOSITES PRODUCED BY LCCS PROCESS|
Kiyoshi Mizuuchi, Takashi Takeuchi, Masao Fukusumi, Masami Sugioka, Hiroshi Nagai and Kanryu Inoue
Osaka Municipal Technical Research Institute, Osaka, 536-8553, Japan.
Materials Science and Processing, Graduate School of Osaka University,
Suita, 565-0871, Japan
Materials Science and Engineering, University of Washington,
Seattle, WA, 98195-2120, USA.
|Summary||Three kinds of metal matrix composites(MMCs) were produced in situ by Low Pressure Casting/Combustion Synthesis(LCCS) Process. Near-net-shape trialuminide-reinforced composites can be fabricated without cavities. The reaction between Nb powder and molten Aluminum was negligible at the present processing condition. Mechanical properties of Al-matrix composites reinforced by Al3Fe were poor because of the heterogeneous dispersion of reinforcement by coarse Al3Fe. In all composites investigated, good mechanical properties were obtained from Al-matrix composite containing Al3Ti. In this case, it was indicated that wetability between matrix and reinforcement was good. With increasing Al3Ti in MMC, the tensile strength of Al/Al3Ti composites was improved at the expense of their ductility.
||Keywords|| low pressure casting, vacuum suction, combustion synthesis, metal matrix composite, aluminum, Al3Ti, intermetallic compound.
Theme : Metal Matrix Composites ; Microstructure/Properties Relationship
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